In the heart-to-heart chat, the 34-year-old new dad said: "I think, weirdly, because of the people that I’ve met and the places that I’ve been fortunate enough to go to, I’ve always had a connection and a love for nature. I view it differently now, without question.
"I’ve always wanted to try and ensure that, even before having a child and hoping to have children - two, maximum!
"But I’ve always thought: this place is borrowed. And, surely, being as intelligent as we all are, or as evolved as we all are supposed to be, we should be able to leave something better behind for the next generation."
Prince Harry and Meghan welcomed baby Archie in May - gushing over their "amazing" son.